« on: May 05, 2014, 03:30:31 PM »
I would also point out that I have personally taken similar tests, and when I express that I believe I can tell a difference (knowing that sometimes there isn't one) I have got it right, normally to the chagrin or complete unacceptance of the poster.
I believe people spend too much time reading forum opinions, tests, reviews etc, and their buying decisions are influenced by that reading. I believe people are sold something on subtleties and nuances that they themselves can't actually see or appreciate and to "justify" that purchase, when no justification is needed, they will make silly claims about minutia.
I've taken a few of the online tests. I am usually right ~70% of the time, so there is a little something to it, but, ultimately, sometimes I can't tell the difference.
On your second point, I absolutely have seen some people spend too much time reading and basing too much of their opinion in details only analytical tests are able to discern. I am sure I've done it myself. That said, I think we are in the phase where we are getting to know not only the 50A but the Sigma Art series. Sigma did something very interesting. But it will be over the next year or two where there is enough use out there to really know what that means. Are there AF issues? Does the dock fix the AF issues? Do Sigma Art lenses develop issues with time? Does Sigma Art have a "unique" color to them? Etc.
Just because there is the potential for over analysis doesn't mean you do not do any analysis. Which is why I really appreciate a side by side comparison performed here at the start of this thread.